Flash apparatus



FIG. 1 is a front view of my design;

FIG. 2 is a front side perspective view of my design;

FIG. 3 is a side view of my design;

FIG. 4 is a back perspective view of my design;

FIG. 5 is a back view of my design; and,

FIG. 6 is a top back perspective view of my design.

The broken lines shown represent portions of the flash apparatus that form no part of the claimed design. 

CLAIM The ornamental design for a flash apparatus, as shown and described. 